How to conduct effective shielding distance for mobile phone signal jammer test?
How to test the effective shielding distance of the mobile phone signal jammer? Many users say that the shielding device has no effect and the actual shielding radius is short, but many of them are caused by incorrect methods. So today we will introduce to you an accurate and fast method, how to detect the shielding range of the shielding device on the spot?
The most feasible method is to test a variety of mobile phones on-site. The detection should not be too one-sided: Use multiple mobile phones with multiple frequency ranges to test the shielding effect of the mobile phone signal jammer on the spot. This is the most convenient, most trouble-free and most feasible test method. Compared with the limitations of passing the mobile phone test software, and the need to convert after passing the professional instrument test, this method is the easiest for users to grasp. Methods as below:
Prepare mobile phones with multiple frequency bands, then turn on the mobile phone signal jammer, hold each mobile phone, and test the effective shielding radius of the jammer from near to far from the installation position of the mobile phone jammer. It is recommended that the user should test the jammer as the center at the same time during the test. , The shielding distance in multiple directions.
When checking whether the mobile phone is shielded, you should pay attention not to just check the signal grid number on the mobile phone, because the signal grid number on the mobile phone is sometimes false and does not represent the current mobile phone communication situation. At this time, we must not draw conclusions too early. This shield has no effect. Instead, you should dial the mobile phone intermittently. You can try to dial a local toll-free number or a fixed landline number. If the call fails, it will be judged to be still in the blocked range. If the call is made, it means that the blocked range is out of range.
After all the multiple frequency bands are tested, the shortest shielding radius of a certain frequency band is selected as the effective shielding radius of the mobile phone signal jammer in this area. This can be used to estimate the location when deploying large-area honeycomb dots.
The above is a very effective and simple way to test the radius of the shield in this environment, but it should not be judged too early. The shielding effect of this shield can only be so far, and it is necessary to check whether there are base stations around it. The shielding effect has a great influence. If the shielding device can meet the requirements of the examination room, it can be used with confidence.
To test whether a certain point is within the shielding range, hold the mobile phone in this position for more than half a minute to confirm whether the mobile phone is shielded.
If you make a call from an unshielded area to a shielded area, you will often walk into the shielded area for a considerable distance before the phone is completely shielded. This is because once the phone is dialed, the phone itself has the ability to resist interference. This kind of anti-interference will make the mobile phone adjust its transmitting power to ensure the normal call this time. Therefore, it is generally not recommended to perform dynamic testing in the call state, but to perform static testing at various points.